Step 1: Preheat the Oven - Start by preheating your oven to 350°F (175°C) for even baking.
Step 2: Prepare the Baking Pan - Grease your 9x13-inch baking pan lightly with butter or line it with parchment paper.
Step 3: Mix the Dry Ingredients - In a mixing bowl, combine the flour and brown sugar until well combined.
Step 4: Add the Butter - Melt the butter and pour it into the dry mixture, blending until crumbly.
Step 5: Incorporate the Pecans - Fold in the pecan halves evenly throughout the dough.
Step 6: Press the Mixture into the Pan - Transfer the mixture to the prepared baking pan and press it firmly into an even layer.
Step 7: Bake the Base - Bake for 15-20 minutes until the edges are golden brown and the center is set.
Step 8: Prepare the Toffee Topping - Melt the chocolate chips in a microwave-safe bowl, heating in 30-second intervals.
Step 9: Add the Chocolate Topping - Spread the melted chocolate over the baked base evenly.
Step 10: Cool and Cut - Allow the bars to cool completely before cutting into squares or rectangles.
